Molding machine



June 17, 1930. e. E. PICKUP MOLDING MACHINE 18 Sheets-Sheet 1 Filed Sept. 24, 1926 June 17, 1930. G. E. PICKUP MOLDING MACHINE Filed Sept. 24, 1926 18 Sheets-Sheet 2 w J a 4 J A q M MM w m w m a. V M .lllf a m 7 f I j n M 20 H J i w e m .W 6 i w. 4 m. Z w u 5 M jl 504 f ww M =3 am h M m 5 Ti M 7/0 M ww w M a m z June 17, 1930. G. E. PICKUP MOLDING MACHINE 18 Sheets-Sheet 3- Filed Sept. 24, 1926 June 17, 1930. a. E. PICKUP 1,763,862

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18 Sheets-Sheet ll June 17, 1930.

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June 17, 1930. PICKUP 1,763,862

MOLDING MACHINE Filed Sept. 24. 1926 1a Sheets-Sheet 14 June 17, 1930. G. E. PICKUP 1,753,362

' MOLDING MACHINB Filed Sept. 24, 1926 18 Sheets-Sheet 5 JIM/007d??? v 660/9? Z7 716/724 A 7... 1 k Q m3 1 M. Q W kw $8 K. @Qw mg N52 1 g June 17, 1930. a. E. PICKUP MOLDING MACHINE Filed Sept. 24, 1926 18 Sheets-Sheet 6 June 17 1930; G. E. PICKUP MOLDING MACHINE Filed Sept. 24, 1926 18 Sheets-Sheet 17' J ;E M 8 $200M 6 60 65 {AW June 17, 1930. G. E. PICKUP MOLDING MACHINE Filed Sept. 24, 1926 18 Sheets-sheet 8 Patented June 17, 1930 UNITED STATES PATENT OFFICE GEORGE E. PICKUP, OF NEWARK, OHIO, ASSIGNOR TO THE WEHRLE COMPANY, OF

7 NEWARK, OHIO, A CORPORATION OF OHIO MOLDING MACHINE Application filed September 24, 1926. Serial No. 137,407.

This invention relates generally to molding machines, and more particularly to a machine which is fully automatic in operation.

It is the general object of the invention to provide a practical molding machine which is fully automatic and adapted for continuous operation.

Another object of the invention is to provide an automatic molding machine capable of producing a completed mold in less time than heretofore.

Another object of the invention is to provide such a machine which is definite in its operation and which embodies devices insuring continuous production of completed molds without the presence of an operator.

Other objects include the provision in a machine of this type of new and improved means to support and assemble the flash sections; means to'support the pattern; means to clamp the flask sections together and to pivot the flask; means to discharge measured quantities of parting and molding sand into the cope and drag sections of the flask in timed relation with a roll-over movement of the flasks; means to support and apply drag boards; means to clamp the drag boards to the flask; means to ram both sections of the flask simultaneously; means to rap the pattern and to draw the pattern from the flask sections; means to withdraw the mold from the flask; means to remove the completed mold from the machine; and other new and improved features hereinafter more fully described.

In pursuance of the foregoing and other objects, I aim to provide a power-driven machine in which the parts of the mold are supported and actuated mechanicallv. and where- Fig. 2 is a vertical central section taken along the line 22 of Fig. 3.

Fig. 3 is a vertical central section taken along the line 33 of Fig. 2.

F ig.'4 is a central vertical section taken through the bellows device for the parting sand.

Fig.v 5 is a vertical central section of the lower portion of the machine taken along a continuation of the line 33 of Fig. 2.

Fig. 6 is a detail of the trip mechanism for the gate of the main hopper.

Fig. 7 is a plan view of the measuring hopper.

Fig. 8 is an end view thereof showing the gate for the hopper and a part of its operating mechanism.

Fig. 9 is a detail of the trip means for the parting sand bellows device. a

Fig. 10 is a plan section taken along the line 1010 of Fig. 2, showing the copetogether with its operating mechanism and supporting frame.

Fig. 11 is a section taken in the plane ofv line 1111 of Fig. 12, but with flask a'ssembled, showing the sand strip operatingmechanism and a portion of the means to clamp the cope and drag sections together. 1 i

Fig. 12 is an enlarged. front elevation of the flask sectionsassembled, including portions of the cope and dragsupporting frames and their operatingmechanisms.

Fig. 13 is a section taken along .the line 1813 of Fig. 12.

Fig. 14 is an enlarged central section through the flask and the cope board, taken in the plane of line l414 of Fig. 2 but with parts in diflerentrelative positions.

Fig. 14 is a section taken along the line 14 14 of Fig. 14.

Fig. 14 is a plan view of the pattern plate mounting two patterns for molding stove lids.

Fig. 1.4 is a section along the line 1414 of Fig. 14 v Fig. 15 is a plan sect-ion taken along the line 15-15 of Fig. 5, showing principally,

the mold carrier, the pattern carrier, and the drag section of the flask.

Fig. 16 is a plan section taken along the line 1616 of Fig. 3, showing the cope board and the drag board hopper.

Fig. 17 is a view taken along the line l717 of Fig. 16, showing a part of the operating mechanism for the gate on the drag board pusher. 7 I

Fig. 18 is an enlarged fragmental side elevation looking at the right hand side of Fig. 2, and showing the operating mechanism for the flask and the lost motion connection for the drag board clamps, the flask being shown with the cope uppermost. V

Fig. 19 is a similar view of the parts with the drag uppermost.

Fig. 20 is a plan view of the cam mechamsm.

21 is'a side elevation of the cam mechanism. I

Fig. 22 is a vertical section taken alongtlie line 2222 of Fig.'20.

-Fig. 23is a vertical section taken along the iine 2323 of Fig. 20. I

Fig. 24; is a vertical section taken along the line 24 2t of Fig.20. V

For purposes ofdisclosure, I have illustrated in the drawings and will hereinafter describe in detail the preferred embodiment of the invention, with the understanding that I do not intend to limit my invention to the particular construction and v arrangement shown, it being contemplated that various changes may be made by those skilled in the art without departing from the spirit and scope of the appended claims. The invention comprises generally a frame A (Figs. '1, 2 andt) upon which the various parts of the flask, the sand measuring and discharging devices, and the ramming means, together with their operating mechanisms,

' are mounted; a power-driven cam mechanism B (Figs. 1 and 20-24) embodying a plurality 'of cams and cam followers; and connecting devices E Fig.1) between the cam followers and the said operating mechanisms, the cam mechanism serving to actuate the various parts in proper sequence. I shall consider. first, the devices and mechanisms carried upon the main frame; second, the cam mechanism and the connecting devices; and, third, the operation of the machine.

As illustrated generally in Fig. 1, and more particularly in Figs. 4 and 5, the invention comprises (see Fig. 1) the main frame A upon which sand supply devices S, a flask comprising a cope C and drag D, and a rammingmeans R, are permanently mounted,

preferably with the flask positioned vertically above the ramming means and beneath the sand supply. The sand supply devices include means for conveying sand to and from the machine and for discharging it in predetermined quantities into the cope and drag sections of the flask. The flask sections are supported so that the cope and drag may be assembled with a pattern plate P therebetween, after which the assembled flask is rolled-over, first to place the drag uppermost and under the sand supply, (a drag board (Z being applied automatically after the drag has been filled with sand) and then to place the cope uppermost and under the sand supply. A cope board 0 carried on a swingable frame is adapted to be swung over the cope whereupon the ramming means is operated to ram both sections of the flask simultaneously.

Main frame The main frame A illustrated most fully in Figs. 1 2, 4c and 5, embodies a pair of cast base sections 30 spaced laterally by means of an upper. cross head 31 and a lower cross head 32 bolted therebetween. Secured to and extending upwardly fromthese base sections are channel-like top sections 33 adapted to support the upper parts of the machine. The two laterally spaced standards thus formed are further secured rigidly together in their spaced relation by various parts of the machine as will be brought forth hereinafter.

. On the upper portions of this main frame the sand supply and distributing devices are mounted. Near the base the various parts of flask are supported.

Sand supply The sand supply for the machine contemplates a conveyor S (Figs. 3 and 5) adapted to discharge into a main hopper H from whence sand is inturn discharged-into a measuring hopper H. From the measuring hopper measured quantities of sand are passed through a distributing chute H to the flask. Y

As illustrated herein, the sand conveying system includes'the chain conveyor S which passes through a sand storage and conditioning apparatus (not shown), then above one or more machines to carry sand to the main hoppers H, then down and back under the machine or machines as shown in Fig. 5, to gather excess sand which has fallen from the machine into a receiving hopper H" and then back to the conditioning apparatus. This provides for a continuous supply of conditioned sand to the main hoppers and for the automatic removal of the stray sand which collects below the machine.

As shown herein, the conveyor S comprises upper andlower troughs 34 and a chain having links 35. The chain is guided and carried by means of a plurality of pairs of flanged. wheels 36 running on a suitably supported set of rails 37. A series of paddles 38 se cured to the chain, drag in the troughs and push the sand along therein. An aperture 39 is provided in the upper trough coinciding 

